How to Diagnose Sexually Transmitted Diseases?

Tests for sexually transmitted diseases (STDs) involves consideration of the risks, probabilities, and costs. For viral infections such as herpes and HPV that come and go it alone, it is difficult to test if symptoms are not present because the most accurate test using a sample of lesions caused by the virus. For bacterial infections such as chlamydia and gonorrhea, the tests performed are not always accurate so often produce false negative (uninfected mistaken, but yes). Thus, it makes more sense for medical providers to make a diagnosis based on a combination of a variety of information including your sexual history, symptoms, and examination.
Trichomoniasis is the most common infection, but only about 30% of patients who actually develop symptoms. Infection is more common in women than in men and more common in older people than younger people. Trichomoniasis diagnosis is made through visual examination and laboratory tests.

Bacterial vaginosis (BV) is the most common bacterial infection among women of childbearing age. As many as 16% of pregnant women have BV. BV was diagnosed by laboratory tests a sample of vaginal fluid.
Human Papillomavirus (HPV). Some types of HPV cause genital warts and some strains associated with cervical cancer. Although there is no cure, the body can clear the virus itself. Diagnosis is primarily based on the presence of HPV warts or Pap test results or VIA (visual inspection of acetic acid). If the Pap smear test or IVA produce abnormal readings, it will be followed up with colposcopy and / or HPV test. Pap Smear or IVA see cell changes caused by HPV infection, HPV test looks for the virus itself. There is currently no test for HPV in men without symptoms. Recent recommendations for screening for HPV, you can check for cervical cancer information on the internet. The HPV vaccine was introduced in 2006 which protects men and women against the types of HPV that cause genital warts and cancer.

Herpes Simplex Virus 2 (HSV-2 or genital herpes) is also difficult to diagnose without visible lesions and many patients do not have symptoms. The infection is slightly more common in women than men. In penetrative sexual intercourse, a man is more likely to pass it on to their partners than a woman to give it to her male partner. People with herpes can actively use drugs every day to reduce the possibility of transmission to sexual partners. A blood test is available for diagnosis of HSV but not always convincing, so it usually is not done unless a person has symptoms.
Chlamydia usually does not produce symptoms. Approximately 75% of women and 50% of infected men have no symptoms. Testing can be performed by means of tests into the vagina, penis, anus, cervix, and / or throat. Some doctors use urine tests to diagnose chlamydia.

HIV. HIV testing can be done with a blood test or sweep (swab) mouth. It usually takes up to 3 months after exposure to HIV (often referred to as the "window period") for your body to develop antibodies were measured by the test. Therefore, even if you have HIV, you do not immediately get a positive test result.

Hepatitis B. Hepatitis B is not curable, but there is no vaccine to prevent it. The infection is diagnosed by a blood test, but health care providers will not automatically test you if you have received the vaccine.

Gonorrhea. Testing for gonorrhea is usually done simultaneously with chlamydia, both with urine tests and test sweep, vagina, penis anus, or throat.

Syphilis. Some doctors can diagnose syphilis by examining a sample of the lesion using a special microscope called a dark-field microscope. If syphilis bacteria are present, they will be visible when observed through the microscope. Another way to test for syphilis is through a blood test.